//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
#region Internal Methods
internal override void UpdateResource(DUCE.Channel channel, bool skipOnChannelCheck)
{
// If we're told we can skip the channel check, then we must be on channel
Debug.Assert(!skipOnChannelCheck || _duceResource.IsOnChannel(channel));
if (skipOnChannelCheck || _duceResource.IsOnChannel(channel))
{
base.UpdateResource(channel, skipOnChannelCheck);
// Read values of properties into local variables
Point3DCollection vPositions = Positions;
Vector3DCollection vNormals = Normals;
PointCollection vTextureCoordinates = TextureCoordinates;
Int32Collection vTriangleIndices = TriangleIndices;
// Store the count of this resource's contained collections in local variables.
int PositionsCount = (vPositions == null) ? 0 : vPositions.Count;
int NormalsCount = (vNormals == null) ? 0 : vNormals.Count;
int TextureCoordinatesCount = (vTextureCoordinates == null) ? 0 : vTextureCoordinates.Count;
int TriangleIndicesCount = (vTriangleIndices == null) ? 0 : vTriangleIndices.Count;
// Pack & send command packet
DUCE.MILCMD_MESHGEOMETRY3D data;
unsafe
{
data.Type = MILCMD.MilCmdMeshGeometry3D;
data.Handle = _duceResource.GetHandle(channel);
data.PositionsSize = (uint)(sizeof(MilPoint3F) * PositionsCount);
data.NormalsSize = (uint)(sizeof(MilPoint3F) * NormalsCount);
data.TextureCoordinatesSize = (uint)(sizeof(Point) * TextureCoordinatesCount);
data.TriangleIndicesSize = (uint)(sizeof(Int32) * TriangleIndicesCount);
channel.BeginCommand(
(byte *)&data,
sizeof(DUCE.MILCMD_MESHGEOMETRY3D),
(int)(data.PositionsSize +
data.NormalsSize +
data.TextureCoordinatesSize +
data.TriangleIndicesSize)
);
// Copy this collection's elements (or their handles) to reserved data
for (int i = 0; i < PositionsCount; i++)
{
MilPoint3F resource = CompositionResourceManager.Point3DToMilPoint3F(vPositions.Internal_GetItem(i));
channel.AppendCommandData(
(byte *)&resource,
sizeof(MilPoint3F)
);
}
// Copy this collection's elements (or their handles) to reserved data
for (int i = 0; i < NormalsCount; i++)
{
MilPoint3F resource = CompositionResourceManager.Vector3DToMilPoint3F(vNormals.Internal_GetItem(i));
channel.AppendCommandData(
(byte *)&resource,
sizeof(MilPoint3F)
);
}
// Copy this collection's elements (or their handles) to reserved data
for (int i = 0; i < TextureCoordinatesCount; i++)
{
Point resource = vTextureCoordinates.Internal_GetItem(i);
channel.AppendCommandData(
(byte *)&resource,
sizeof(Point)
);
}
// Copy this collection's elements (or their handles) to reserved data
for (int i = 0; i < TriangleIndicesCount; i++)
{
Int32 resource = vTriangleIndices.Internal_GetItem(i);
channel.AppendCommandData(
(byte *)&resource,
sizeof(Int32)
);
}
channel.EndCommand();
}
}
}
